Fix: Filter URLs from default model listing

- Skip URLs when listing the default model in list_models()
- This prevents download URLs from appearing in available models list

coderai

@@ -2704,6 +2704,8 @@ class MultiModelManager:
         # Add default model(s)
         if self.default_model:
             model_id = self.default_model
+            # Skip URLs - they are download sources, not model identifiers
+            if not (model_id.startswith("http://") or model_id.startswith("https://")):
                 # Also add short name
                 short_name = self.default_model.split("/")[-1] if "/" in self.default_model else self.default_model
                 if short_name != self.default_model: